Pat gets a bellowing no-prize for bringing us news of the discovery of a new dinosaur predator. This one's bigger than ol' T. rex, although perhaps a bit lighter in build. The interesting bit is, it would seem these may have hunted in packs:

The discovery, along with other recent ones in Canada, Mongolia and the United States, appeared to support an emerging interpretation of the hunting behavior of predatory dinosaurs. Instead of being solitary hunters, as once thought, they may have operated in groups.